Improvement in ventilated sewer-traps



3.1. GAMHELL.

VENTILATED SEWER-TRAP.

Patented Jan. 18,1876.

N.PETERS, FHOTO-LITHOGRAPHER. wASHmGTON, D C.

UNITED STATES PATENT OFFTGE.

JAMES T. CAMPBELL, OF NEW YORK, N. Y.

IMPROVEMENT IN VENTILATED SEWER-TRAPS.

Specification forming part of Letters Patent No. 172,385, dated January 18, 1876; application filed December 17, 1875.

To all whom it may concern:

Be it known that I, JAMES T. CAMPBELL, of the city, county, and State of New York, have invented a new and useful Improvement in Ventilated Sewer-Traps, of which the following is the specification:

The invention relates to a sewer-trap for buildings, which is so constructed as to prevent the sewer-gases from passing through the waste-pipes into the building.

The invention consists of a trap-box placed either inside of, or directly outside of, the building to which it is applied, and an airpipe is arranged to pass up through the building, preferably through the wall, to some place abovethe root, whence the foul gases that escape through the trap may be discharged into the open air.

The invention will be readily understood by reference to the accompanying drawings, of which- Figure I is a sectional elevation of the improved trap, and Fig. II is a sectional plan of the same, taken just below the cover of the box.

The box A, which contains the parts forming the trap, will be made of lead, cast-iron, or any other suitable material, and the interior of this box will be divided into three compartments, B O D, by the diaphragms E F.

The vertical diaphragm E, which nearly bi-- sects the box into two equal compartments, B G, rises from the bottom to about threequarters of the height of the box. From the top edge of this diaphragm E a sloping diaphragm, F, cuts off the compartment D from the lower part of O. A small part of the dia phragm F extends downward in a vertical wall,f, to near the bottom of the box, leaving only a small aperture, f, through which the sewage will flow from the small well 0 of the compartment 0 into the air-trap D, which is covered by the diaphragm F f. The diaphragms E F will be joined together airtightly, so as to form an air-chamber in the top part of the compartment D. The waste-pipe G will lead from the building in the usual manner, and will discharge into the compartment B, entering the said compartment either at the side or top, as circumstances may require, and will extend to near the bottom of the compartment, so as to have its lower end sealed by the water in the box, but leaving sufficient space at the bottom end of the pipe for the free discharge of the sewerage into the box. The sewer or drain pipe H leads from the compartment D, above the floor of which it extends three or four inches, more or less, so as to leave sufficient water in that and the bottom part of O to form a water-seal against or around the bottom end of the diaphragm F. From the top of the chamber D an airpipe, I, rises, either inside of or through the wall of the building, to a suitable place above the roof to discharge the vitiated air intov the open atmosphere, where it will do the least damage in a sanitary point of view. A branch pipe, 1, leads from the top part of chamber 0 to the air-pipe I, to permit the escape of the gases confined, or which otherwise would be confined in the top of the said chamber.

In operation, the sewage will flow through the pipe Ginto the compartment B, thence over the diaphragms E F into the well 0 at the bottom part of the compartment 0, and from the well 0 through the aperture f, into the compartment D, whence the sewer-pipe H will lead it to the sewer.

The top part of the compartment D, being an air-chamber, any gases escaping from the pipe H will be retained therein until discharged through the air-pipe I.

Having thus described my invention, I desire to claim I The ventilated sewer-trap A, having its interior compartments B G D, and the waste and sewer pipes G H, and the ventilating-pipe I, arranged as and for the purpose set forth and described.

JAMES T. CAMPBELL.

WVitnesses ANTON O. CRONDAL, FRANKLIN BARRI'IT. 

